nasa sense and astronauts to the moon for the last time. no one has been back since. >> one giant leap for private enterprise. >> some former employees have launched a new company. it says it will soon be offering commercial flight back to the surface. >> our vision is to create a reliable and affordable u.s.- based, commercial lunar transportation system. >> this is the module they used 40 years ago and this is what they hope will take people there by 2020. the company says it will cost $1.4 billion. it will be open to corporations and wealthy individuals. countries like japan, south korea and south africa would be able to carry out research on the lunar surface. 40 years ago, only the resources of the u.s. could send an astronaut to them in. now there is no political will or the money to do it again. according one of the last man to be there, it will be the private sector from now one that will leave the way back. >> it will be an effort by private investors, obviously regulated and sanctioned by government, but managed by the private sec